From 21eaa8f164cba9fe6032a6a15de0c51ae1a16f8b Mon Sep 17 00:00:00 2001
From: Jakob Unterwurzacher <jakobunt@gmail.com>
Date: Sat, 8 Sep 2018 12:18:26 +0200
Subject: [PATCH] configfile: return specific error on empty input

Report the actual problem instead of a generic
"unexpected end of JSON input".

https://github.com/rfjakob/gocryptfs/issues/258
---
 internal/configfile/config_file.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/internal/configfile/config_file.go b/internal/configfile/config_file.go
index 4edf99d..31646ef 100644
--- a/internal/configfile/config_file.go
+++ b/internal/configfile/config_file.go
@@ -133,6 +133,9 @@ func Load(filename string, password []byte) ([]byte, *ConfFile, error) {
 	if err != nil {
 		return nil, nil, err
 	}
+	if len(js) == 0 {
+		return nil, nil, fmt.Errorf("Config file is empty")
+	}
 
 	// Unmarshal
 	err = json.Unmarshal(js, &cf)